Program Program1b_Lesson5;
Uses Crt;
Label Return; {use of the goto statement is not recommended.. avoid it}
Var
SEL : Integer;
YN : Char;
Begin
Return:Clrscr;
Writeln('[1].PLAY GAME');
WRITELN('[2].LOAD GAME');
WRITELN('[3].MULTIPLAYER');
WRITELN('[4].EXIT GAME');
Writeln('note: Do not press anything except');
Writeln('numbers; otherwise an error occurs!');
Readln(SEL);
Case SEL of 1 : Begin
Writeln('You will soon be able to create');
Writeln('games using Pascal Programming :-)');
Delay(2000);
Goto Return;
End;
2 : Begin
Writeln('Ahhh... no saved games');
Delay(2000);
Goto Return;
End;
3 : Begin
Writeln('networking or 2 players?');
Delay(2000);
Goto Return;
End;
4 : Begin
Writeln('Exit?');
N := Readkey;
Case YN of {a sort of a nested case statement}
'y' : Begin
Writeln('Good Bye...');
Delay(1000);
Halt;
End;
'n' : Goto Return;
End; {End Case 2}
End; {Close Conditional Expression 4}
End; {End Case 1}
End.
The CASE-OF-ELSE Statement
Again this is similar to the if..then..else statement. Study the program below to learn how to use the 'else' term following the 'case statement':
Program Program2_Lesson5;
Uses Crt;
Label Return; { avoid it } Var YN : Char;
Begin
Return: ClrScr;
Writeln('Exiting?');
YN := Readkey;
Case YN of
'y' : Halt;
'n' : Begin
Writeln('What are you going to do here, anyway?');
Delay(2000);
Halt;
End;
Else Begin
Writeln('Press either ''y'' for yes');
Writeln('or ''n'' for no.. please try again..');
Delay(3500);
ClrScr;
Goto Return;
End;
End; {CASE}
End. {PROGRAM}
